For what they are, they're not bad. I mean, for under $5 a pop, I think they're worth it.
Pocketbike racer was the most fun, IMO. Sneak King, while not great, isn't bad. Big Bumping was my least favorite of the three.
I was surprised at how people dismiss these games. Yes, they are little more than advertising (especially Sneak King), but do they try to pretend they are not? No.
Besides, my son loves PBR, so I have another kid-friendly game he can play in my collection...